Langley Alloys
Super Duplex Ferralium 255
Super Duplex Ferralium 255-SD50 sets a new bench mark as the first to state 570N/mm2 as the minimum 0.2% Proof Stress. It offers excellent corrosion resistance in a wide variety of corrosive chemicals including sulphuric, phosphoric and nitric acids.
In Seawater and other chloride containing environments Ferralium 255 SD-50 also provides outstanding resistance to pitting and crevice corrosion, with Critical Pitting Temperature exceeding 50°C.
Excellent ductility and impact strength at both ambient and sub-zero temperatures combine with a high resistance to abrasion, erosion and cavitation erosion.
Listed in NACE MR 01 75 for sour service and having gained ASME Approval for Pressure Vessel applications, Ferralium 255-SD50 is tested to the highest degree using tests designed to guarantee that the trade-marked product possesses high integrity, a correct phase balance and the absence of sigma and other deleterious phases.
Ferralium 255-SD50 is particularly applicable for large forgings, as the formation of sigma phase is much less likely than it is for other Super Duplexes.
For European Sales of Ferralium contact our sister company Langley Alloys in the UK
| Ferralium 255 |
|---|
|
| Trade Name | Common Name | UNS | ASTM A276/ A479 | ASTM A182 | ASTM 240 | ASTM A789/A790 (ASME) | European |
|---|---|---|---|---|---|---|---|
| (ASME) | (ASME) | ||||||
| Grade | Grade | Bar | Forging | Plate | Pipe | Werkstoff | |
| Ferralium | 255 | S32550 | S32550 | F61 | S32550 | S32550 | 1.4507 |
| Grade | Chemistry (Typical Values) | Mechanicals | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Specification | Cr | Ni | Mo | Cu | N | W | Si | Mn | P max |
S max |
C max |
Fe | UTS N/mm² (min) |
0.20% Proof (min) |
Elong % (min) |
Hardness HB (max) |
PREN |
| Ferralium 255 | 26 | 6.3 | 3.5 | 1.75 | 0.23 | 0.15 | 0.5 | 1 | 0.025 | 0.005 | 0.025 | Bal | 790 | 570-600 | 25 | 270 | 40 |
Super Duplex 255 Sizes Available
| Bar Sizes | |
|---|---|
| Dia | lb/ft |
| 1/2" | 0.66 |
| 5/8" | 1.04 |
| 3/4" | 1.49 |
| 7/8" | 2.03 |
| 1" | 2.66 |
| 1 1/8" | 3.36 |
| 1 1/4" | 4.15 |
| 1 3/8" | 5.06 |
| 1 1/2" | 5.98 |
| 1 5/8" | 7.06 |
| 1 3/4" | 8.14 |
| 1 7/8" | 9.4 |
| 2" | 10.63 |
| 2 1/4" | 13.45 |
| 2 1/2" | 16.61 |
| 2 3/4" | 20.1 |
| 3" | 23.92 |
| 3 1/4" | 28.08 |
| 3 1/2" | 32.57 |
| 3 3/4" | 37.38 |
| 4" | 42.54 |
| 4 1/4" | 48.02 |
| 4 1/2" | 53.84 |
| 4 3/4" | 59.99 |
| 5" | 66.47 |
| 5 1/4" | 73.25 |
| 5 1/2" | 80.43 |
| 6" | 95.72 |
| 6 1/2" | 112.33 |
| 6 3/4" | 121.16 |
| 7" | 130.28 |
| 7 1/2" | 148.81 |
| 8" | 170.18 |
| 9" | 215.39 |
| 10" | 265.92 |
| 10 1/8" | 272.41 |
| 11" | 321.77 |
| 11 1/8" | 329.13 |
| 12" | 382.92 |
| 13 1/8” | 458.11 |
| 14" | 521.2 |
| Plate / Sheet Sizes | |
|---|---|
| Thickness | lb/ft² |
| 0.040” | 1.72 |
| 0.063” | 2.72 |
| 0.078” | 3.36 |
| 0.125” | 5.39 |
| 0.141” | 6.08 |
| 0.188” | 8.11 |
| 0.25” | 10.78 |
| 0.375” | 16.17 |
| 0.50” | 21.57 |
| 0.75” | 32.35 |
| 1.0” | 43.13 |
| 1.25” | 53.91 |
| 1.5” | 64.7 |
| 1.75” | 75.48 |
| 2.0” | 86.26 |
| 2.5” | 107.83 |
| 3.0” | 129.39 |
| 3.54” | 152.68 |
| 4.0” | 172.52 |
| Pipe Stock Sizes | ||
|---|---|---|
| Nominal | Sch. | lb/ft |
| Bore | ||
| 1/2" | 40 | 0.86 |
| 80 | 1.08 | |
| 160 | 1.31 | |
| 3/4" | 40 | 1.14 |
| 80 | 1.49 | |
| 160 | 1.93 | |
| 1" | 10 | 1.43 |
| 40 | 1.7 | |
| 80 | 2.21 | |
| 1 1/2" | 40 | 2.76 |
| 80 | 3.68 | |
| 2" | 10 | 2.68 |
| 40 | 3.71 | |
| 80 | 5.1 | |
| 2 1/2" | 10 | 3.58 |
| 40 | 5.89 | |
| 3" | 10 | 4.4 |
| 40 | 7.7 | |
| 80 | 10.42 | |
| 4" | 10 | 5.71 |
| 40 | 10.97 | |
| 80 | 15.25 | |
| 6" | 10 | 9.43 |
| 40 | 19.29 | |
| 80 | 29.06 | |
| 8" | 10 | 13.62 |
| 40 | 29.04 | |
| 80 | 44.14 | |
| 10" | 10 | 18.95 |
| 40 | 41.18 | |
| 80 | 55.69 | |
| 12" | 40 | 30.25 |
| Corrosion Testing |
|---|
| G48A Corrosion Test at 50°C (122°F) |
| Seawater corrosion test, demonstrates the absence of Sigma and otherdeleterious phases such as nitrides.Confirms practical pitting resistance rather than the theoretical PREN. |
| Common Test Results |
| No Pitting and weight loss <4g/m²(For 255 SD50 weight loss is <0.8g/m²) |
| Impact Testing | |
|---|---|
| Charpy ‘V’ notch | |
| Typically carried out at both roomtemperature and -46°C (-51°F) to ensure suitability for offshore applications and the absence of Sigma phase which can reduce toughness. | |
| Common Test Results | |
| Room Temp :250-350 J (185-260 ft.lb) -46°C (-51°F) :40-120 J (29-89 ft.lb) |
| Key Reasons to Choose Super Duplex |
|---|
| · High Strength · Excellent Corrosion Resistance · Suitable for sub-zero Service · Extended Lifecycle · 10% Lighter then 316 · Cost Saving over Nickel Alloys |
Ferralium 255-SD50 sets a new bench mark for Super Duplex as the first to state 570N/mm2 as the minimum 0.2% Proof Stress. It offers excellent corrosion resistance in a wide variety of corrosive chemicals including sulphuric, phosphoric and nitric acids.
In Seawater and other chloride containing environments Ferralium 255 SD-50 also provides outstanding resistance to pitting and crevice corrosion, with Critical Pitting Temperature exceeding 50°C.
Excellent ductility and impact strength at both ambient and sub-zero temperatures combine with a high resistance to abrasion, erosion and cavitation erosion.
Listed in NACE MR 01 75 for sour service and having gained ASME Approval for Pressure Vessel applications, Ferralium 255-SD50 is tested to the highest degree using tests designed to guarantee that the trade-marked product possesses high integrity, a correct phase balance and the absence of sigma and other deleterious phases.
Ferralium 255-SD50 is particularly applicable for large forgings, as the formation of sigma phase is much less likely than it is for other Super Duplexes.
Ferralium 255-SD50 sets a new bench mark for Super Duplex as the first to state 570N/mm2 as the minimum 0.2% Proof Stress. It offers excellent corrosion resistance in a wide variety of corrosive chemicals including sulphuric, phosphoric and nitric acids.
In Seawater and other chloride containing environments Ferralium 255 SD-50 also provides outstanding resistance to pitting and crevice corrosion, with Critical Pitting Temperature exceeding 50°C.
Excellent ductility and impact strength at both ambient and sub-zero temperatures combine with a high resistance to abrasion, erosion and cavitation erosion.
Listed in NACE MR 01 75 for sour service and having gained ASME Approval for Pressure Vessel applications, Ferralium 255-SD50 is tested to the highest degree using tests designed to guarantee that the trade-marked product possesses high integrity, a correct phase balance and the absence of sigma and other deleterious phases.
Ferralium 255-SD50 is particularly applicable for large forgings, as the formation of sigma phase is much less likely than it is for other Super Duplexes.
Langley Alloys
Langley Alloys, (Langley Alloys), located in Vancouver, Washington, is a full service metals distributor specializing in duplex and super-duplex stainless steels as well as Austenitic XM-19 alloys...... Metals ideal for chemical, marine, pulp & paper, mining, phosphate fertilizer production and pollution control applications. Our sales staff has over 50 years experience in the metals industry. Let them put that expertise to work for you.
Langley Alloys carries a full line of products in super-duplex stainless steel Ferralium 255 (UNS S32550, S32520, F61), UNS S32750 (Alloy 2507, F53) & UNS S32760 (ZERON® 100, F55). Langley Alloys prides itself as a service oriented company that can meet the high demands of our customers. With our many years of experience and close relationships with vendors, we can provide finished products directly from engineering drawings.
Using advanced technology such as abrasive water jet and plasma cutting, slitting and CNC machining, Langley Alloys can save you money and time by providing cut-to-order products in many configurations. Langley Alloys - Portland is ISO 9001:2008 certified and provides full chemical and physical certification to ASTM, ASME, ANSI, AWS, NACE, NORSOK.